11854603890 has 24 divisors (see below), whose sum is σ = 30821970348. Its totient is φ = 3161227680.

The previous prime is 11854603889. The next prime is 11854603913. The reversal of 11854603890 is 9830645811.

11854603890 is a `hidden beast` number, since 1 + 18 + 546 + 0 + 3 + 8 + 90 = 666.

11854603890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11704859721 + 149744169 = 108189^2 + 12237^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65858821 + ... + 65859000.

Almost surely, 2^11854603890 is an apocalyptic number.

11854603890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11854603890 is an abundant number, since it is smaller than the sum of its proper divisors (18967366458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11854603890 is a wasteful number, since it uses less digits than its factorization.

11854603890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131717834 (or 131717831 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 11854603890 in words is "eleven billion, eight hundred fifty-four million, six hundred three thousand, eight hundred ninety".